表面摩擦系数 coefficient of surface friction 比例系数 coefficient of the proportion 热膨胀系数 coefficient of thermal expansion ..
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According to the process of the actual control plant, the control algorithm by changing proportion coefficient is adopted and proven to have a satisfied regulating results.
根据实际控制对象的工艺要求，采用变比例系数控制算法，经实际运行获得满意的调节效果。
The number of teeth pairs mating simultaneously and the proportion coefficient of the biggest load on a tooth to total load is derived explicitly by means of geometric method and elastic mechanics.
本文用简明的几何推导，弹性力学的方法，推导出了轮齿受载弹性变形后同时啮合的确切齿对和承受载荷最大的齿对的载荷与总载荷的比例系数——承载能力系数。
The proportion of food expenses in consumption outlay (the Engel coefficient) dropped to 50.0 percent in 1994 from 54.2 percent in 1990.
1994年，城镇居民的食品支出占消费支出的比重（恩格尔系数），从1990年的54.2%下降到50.0%。
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